Negative.... I've done two and reasonable care is all that either one needed. I'll be to first to tell ya.... I do not have a jig, a lift, or measuring tools that are much more complex than a tape measure.
As per Wild Rides:
It is not necessary to do all of that with their S-Box unless you're doing some mod that is outside of the norm for Fox or SN95.
What I do have is a garage floor, a jack, and some stands.
The entire reason that I like this kit (I understand very well that other kits may be better) is that this is the DIY version. Even Noobz can do it.
Ever seen one installed off a few 1/16th's from square?
I have
That car went into the wall on the first pass out
The owner who installed it himself said "I thought it was close enough"
WRONG!
While a jig isn't "required" it behooves the installer to take a metric ton of measurements and plot the points down the the ground with a plumb bob and string line at the very least
What I have done was to have the thrust alignment checked as the front was being adjusted. You guys are also aware that my time at the track has been minimal. Maybe a weekend every couple of years.
You guys that are actually racing??? Yep.... I completely understand the additional measures.
To repair torn uppers. Stock ones will tear a hole in the floor behind the rear seat if you let it get bad.
It's not a project I think many want to really do, but it's one of very few off the shelf solutions for fixing the uppers.
Beats paying a chassis shop a fortune. Even worse being at their mercy to fix your car. Chassis guys are worse than paint shops for timely work.
The other solutions is a torque arm from MM or griggs. Which is probably where I would put the money.
That's another one of those suspension mods that requires a lot of exhaust work. The other one that comes up a lot is the IRS swap.
I'm the guy who sets his floor mats in with a vernier. My cars do not leave the driveway unless the tires pressures on the left and right are not within 1 psi of each other. I rebuild robots for a living so I definately like to square things up before welding them in BUT if a car drives straight into a wall it's not because and upper arm mount was 1/16" out.